CN109802803B - Information indication method, terminal equipment and network equipment - Google Patents

Information indication method, terminal equipment and network equipment Download PDF

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Publication number
CN109802803B
CN109802803B CN201711148386.0A CN201711148386A CN109802803B CN 109802803 B CN109802803 B CN 109802803B CN 201711148386 A CN201711148386 A CN 201711148386A CN 109802803 B CN109802803 B CN 109802803B
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China
Prior art keywords
subcarrier
resource
information
frequency
bandwidth
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CN201711148386.0A
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CN109802803A (en
Inventor
郭志恒
毕文平
万蕾
沈祖康
赵旸
龙毅
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to CN201910615747.0A priority Critical patent/CN110430617B/en
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to CN201711148386.0A priority patent/CN109802803B/en
Priority to JP2020526982A priority patent/JP7030193B2/en
Priority to EP18877910.2A priority patent/EP3709550B1/en
Priority to BR112020009455-2A priority patent/BR112020009455A2/en
Priority to PCT/CN2018/116020 priority patent/WO2019096272A1/en
Priority to ES18877910T priority patent/ES2925203T3/en
Publication of CN109802803A publication Critical patent/CN109802803A/en
Priority to US16/875,679 priority patent/US20200280524A1/en
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Publication of CN109802803B publication Critical patent/CN109802803B/en
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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/70—Admission control; Resource allocation
    • H04L47/72—Admission control; Resource allocation using reservation actions during connection setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0058—Allocation criteria
    • H04L5/0062—Avoidance of ingress interference, e.g. ham radio channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/005—Allocation of pilot signals, i.e. of signals known to the receiver of common pilots, i.e. pilots destined for multiple users or terminals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0058—Allocation criteria
    • H04L5/0073—Allocation arrangements that take into account other cell interferences
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/26—Resource reservation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria

Abstract

The application discloses an information indication method, terminal equipment and network equipment. Wherein the method comprises the following steps: the terminal equipment receives indication information from the network equipment, wherein the indication information is used for indicating at least one of frequency position information or bandwidth information, the frequency position information comprises one of a number of a first subcarrier, an absolute wireless channel number or a first frequency, and the bandwidth information comprises one of a first bandwidth, a second subcarrier number, a first resource block number or a second resource block bitmap; and the terminal equipment determines a first resource according to the indication information, wherein the first resource is reserved resource. By adopting the method and the device, the reliability of the position where the resource needs to be reserved in the determined system is improved.

Description

Information indication method, terminal equipment and network equipment
Technical Field
The present disclosure relates to the field of communications technologies, and in particular, to an information indication method, a terminal device, and a network device.
Background
With the continuous development of wireless communication technology, frequency bands below 6GHz can be deployed simultaneously for Long term evolution (Long term evooution, abbreviation: LTE) and fifth generation mobile communication networks (The fifth-generation mobile networks, abbreviation: 5G) New air gap (New radio interface, abbreviation: NR). In a scenario where LTE and 5G NR are deployed simultaneously, there may be interference between LTE and NR, and data transmission of NR may cause interference to LTE reference signals such as Cell-specific reference signals (Cell-specific Reference Signal, abbreviated: CRS), channel state information reference signals (Channel State Information Reference Signal, abbreviated: CSI-RS), and the like. In order to ensure that the LTE system can serve the conventional LTE user, the terminal device needs to reserve (reserve) NR resources at positions corresponding to the reference signals of LTE. For example, for a physical downlink shared channel (Physical downlink shared channel, abbreviated: PDSCH) with a subcarrier spacing (Subcarrier Spacing, abbreviated: SCS) of 15kHz for NR, the terminal device may reserve NR resources corresponding to the resource location of the LTE CRS. Wherein the location of the reserved resource may be determined by a frequency offset V shift (cell-specific frequency shift) and the number of antenna ports (CRS antenna ports (s)) of the CRS to solve the problem that the CRS of the downlink of the LTE system is interfered by the downlink data signal of the NR system.
However, since the center subcarrier of the frequency used in the LTE downlink is a Direct-current subcarrier (Direct-Current subcarrier, abbreviated as DC subcarrier), the Direct-current subcarrier is not used for information transmission, which results in sharing of a frequency part in the LTE system and the NR system downlink, and alignment positions of Resource Blocks (RBs) on both sides of the NR subcarrier corresponding to the LTE center subcarrier are different. As shown in fig. 1, it is assumed that RBs of LTE and NR are perfectly aligned in a shared band of LTE and NR on the left side of an LTE center subcarrier; on the right side of the NR subcarrier corresponding to the LTE center subcarrier, since the LTE center subcarrier is a DC subcarrier, it is not used for information transmission, that is, it is not calculated in the subcarriers of the RBs, and the NR calculates the NR subcarrier corresponding to the LTE center subcarrier in the RB subcarriers. Therefore, the position of each RB in the NR changes with respect to the position of the RB in LTE, and the alignment of the frequency domain resource positions in the CRS in LTE on the left and right sides of the NR subcarrier corresponding to the LTE center subcarrier is different, that is, the left and right sides The subcarrier offsets are different. Wherein the frequency of the left side sub-carrier is lower than the frequency of the right side sub-carrier. Therefore, the terminal device only follows the frequency offset V described above shift And the number of antenna ports of the CRS cannot accurately determine the position where resources need to be reserved in the NR system.
Disclosure of Invention
The embodiment of the invention provides an information indication method, terminal equipment and network equipment, which are beneficial to improving the reliability of the position where the resource needs to be reserved in a determined system.
In one aspect, an embodiment of the present invention provides an information indication method, including: the terminal device receives the indication information from the network device and determines the first resource according to the indication information. The indication information may be used to indicate at least one of frequency location information and bandwidth information, where the frequency location information may include a number of a first subcarrier, an absolute radio channel number, or a first frequency, and the first resource is a reserved resource. Therefore, the problem that the relative positions of the reference signal positions on the left side and the right side of the center subcarrier in the resource blocks are inconsistent due to the resource offset phenomenon brought by the center subcarrier can be solved, namely, the positions of the resources to be reserved on the left side and the right side of the center subcarrier in the resource blocks are inconsistent, and the reliability of the positions of the resources to be reserved in the determined system can be improved.
In one possible design, the number of the first subcarrier may refer to a number of a subcarrier corresponding to a center subcarrier of a first system, such as an LTE system, in a second system, such as an NR system, and the first frequency may refer to a frequency of the LTE center subcarrier. The terminal device is thereby able to determine the position of the first sub-carrier according to the frequency position information.
In one possible design, the bandwidth information may include at least one of a first bandwidth, a second number of subcarriers, a first number of resource blocks, a second resource block bitmap; the first Bandwidth may refer to a Bandwidth (or index) of the first system, e.g., LTE, the second number of subcarriers may refer to a number of subcarriers (or index) corresponding to the Bandwidth of the first system, e.g., LTE, the first number of resource blocks may refer to a number of RBs (or index) corresponding to the Bandwidth of the first system, e.g., LTE, and the second resource block bitmap may refer to an RB bitmap corresponding to a Bandwidth of the second system, e.g., NR, e.g., bandwidth Part (BWP). Alternatively, the bandwidth information may include at least two of first location information of the first resource unit, second location information of the second resource unit, the number of the first resource unit, or the number of the second resource unit. The first resource unit and the second resource unit may be the same or different, for example, the first resource unit and/or the second resource unit may be RB, subcarrier, etc. That is, the indication information may further include a position (e.g. number) of a starting subcarrier or RB of the shared frequency between the systems, a position of a terminating subcarrier or RB, or include a position of the starting subcarrier or RB, the number of subcarriers or RBs, or include a position of the terminating subcarrier or RB, the number of subcarriers or RBs. The terminal device can thereby determine the shared frequency (commonly used frequency) between systems such as the shared frequency between LTE and NR based on the bandwidth information.
In one possible design, the terminal device may determine the location of the first subcarrier, e.g., based on frequency location information indicated by the indication information. The first resource is determined to have a different position in the resource block in a first frequency domain range and a second frequency domain range, wherein the first frequency domain range includes frequencies in a second bandwidth that are lower than the position of the first subcarrier, and the second frequency domain range includes frequencies in the second bandwidth that are higher than the position of the first subcarrier. Alternatively, the second bandwidth may refer to a shared frequency between systems such as LTE and NR, and the second bandwidth may be determined according to the bandwidth information or determined according to a default rule (e.g., an entire BWP).
In one possible design, the third subcarrier number included in the first resource determined in the first frequency domain and the fourth subcarrier number included in the first resource determined in the second frequency domain satisfy: the remainder of the third subcarrier number divided by 3 is not equal to the remainder of the fourth subcarrier number divided by 3, or the remainder of the third subcarrier number divided by 3 differs from the remainder of the fourth subcarrier number divided by 3 by 1. The first frequency domain range includes frequencies in a second bandwidth that are lower than the first subcarrier, and the second frequency domain range includes frequencies in the second bandwidth that are higher than the first subcarrier. The third subcarrier may refer to any subcarrier corresponding to the first resource in the first frequency domain, and the fourth subcarrier may refer to any subcarrier corresponding to the first resource in the second frequency domain.
In one possible design, if the location of the first subcarrier is in a range of a downlink bandwidth, such as BWP, used by a system needing to perform resource reservation, i.e., a second system, such as NR, the determined location of the first resource in one resource block is different, such as the subcarrier numbers in RBs are different, that is, there is an offset, from the second bandwidth, i.e., the starting subcarrier of the shared frequency, in the second system, to the first subcarrier, i.e., the first frequency domain, and from the first subcarrier in the second system to the ending subcarrier of the second bandwidth, i.e., the second frequency domain; or the first resource is determined in a different manner in the first frequency domain range and the second frequency domain range; or the third subcarrier number included in the first resource determined in the first frequency domain range and the fourth subcarrier number included in the first resource determined in the second frequency domain range satisfy the following conditions: the remainder of the third subcarrier number divided by 3 is not equal to the remainder of the fourth subcarrier number divided by 3, or the remainder of the third subcarrier number divided by 3 differs from the remainder of the fourth subcarrier number divided by 3 by 1. Optionally, if the first subcarrier is outside the downlink bandwidth range used by the second system, the determining manner of the first resource may be the same as the determining manner of the first resource in the first frequency domain range; or the subcarrier numbers in the RBs are the same; or the third subcarrier number included in the first resource determined in the first frequency domain range and the fourth subcarrier number included in the first resource determined in the second frequency domain range satisfy the following conditions: the remainder of the third subcarrier number divided by 3 is equal to the remainder of the fourth subcarrier number divided by 3, or the remainder of the third subcarrier number divided by 3 differs from the remainder of the fourth subcarrier number divided by 3 by 0.
In one possible design, the indication information may also be used to indicate first information, where the first information may include time domain location information occupied by the first resource, such as the number of an orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing, abbreviated as OFDM) symbol, e.g., the number of the OFDM symbol may be {0,1,4,7,8,11} or {2,5,6,9} or {2,5,9} or {1,4,5,8} or {0,4,7,11} or {1,4,8} or {0,3,6,7,10} or {3,6,10} (or may refer to index of the set of numbers), which are not listed herein. The terminal equipment can further determine the time domain position of the first resource to be reserved according to the indication information, and further determine the first resource by combining the time domain position.
In one possible design, the indication information may further be used to indicate second information, where the second information may include frequency domain resource information, such as a subcarrier number (or index of a number set), occupied by the first resource in one resource block. Therefore, the terminal equipment can determine the frequency domain position information of the first resource according to the frequency domain resource information occupied by the first resource in the resource block, such as the subcarrier number, and further determine the actual position of the first resource in different areas according to the position relation between the frequency domain position information of the first resource and the first subcarrier.
In one possible design, the indication information may further be used to indicate third information, where the third information may include resource information and a frequency offset occupied by the second resource in one resource block, where the resource information may include at least one of a subcarrier number (or index of a number), a subcarrier number (or index of a number set). Therefore, the terminal equipment can determine the actual position of the first resource in different areas according to the information of the resource information and the frequency offset occupied by the second resource in the resource block, the position of the first subcarrier, the bandwidth information and the like. The second resource may refer to a kind of occupied resource, i.e. a resource for which other systems, such as the second system, need to reserve a resource location for the second resource, e.g. the second resource may refer to a reference signal of the first system, such as CRS of LTE.
In one possible design, the indication information may also be used to indicate fourth information, which may include antenna port information and a frequency offset. The terminal device can determine the actual position of the first resource in different areas according to the antenna port information, such as the antenna port number (or index of the port number), the frequency offset, the position of the first subcarrier, the shared frequency and the like.
In one possible design, the indication information may further be used to indicate fifth information, where the fifth information may include resource information and a frequency offset occupied by the first resource in one resource block, where the resource information may include at least one of a subcarrier number (or index of a number), a subcarrier number (or index of a number set). Therefore, the terminal equipment can determine the actual position of the first resource in different areas according to the information of the resource information and the frequency offset occupied by the first resource in the resource block, the position of the first subcarrier, the shared frequency and the like.
In one possible design, one or more of the frequency location information, bandwidth information, a number of an OFDM symbol occupied by a first resource, frequency domain resource information occupied by the first resource in one resource block, frequency domain resource information occupied by a second resource in one resource block, frequency offset, and antenna port information may be preconfigured.
On the other hand, the embodiment of the invention also provides an information indication method, which comprises the following steps: the network equipment generates indication information, sends the indication information to the terminal equipment, so that the terminal equipment can receive the indication information, and determines first resources to be reserved according to the indication information. Thereby helping to promote the reliability of the determined position where the resource needs to be reserved in the system.
Wherein the indication information may be used to indicate at least one of frequency location information, bandwidth information, which may include a number of the first subcarrier, an absolute radio channel number, or a first frequency.
In one possible design, the number of the first subcarrier may refer to a number of a subcarrier corresponding to a center subcarrier of a first system, such as an LTE system, in a second system, such as an NR system, and the first frequency may refer to a frequency of the LTE center subcarrier. The network device indicates the frequency position information, so that the terminal device can determine the position of the first subcarrier according to the frequency position information.
In one possible design, the bandwidth information may include at least one of a first bandwidth, a second number of subcarriers, a first number of resource blocks, a second resource block bitmap; the first bandwidth may refer to a bandwidth (or index of bandwidth) of the first system, e.g., LTE, the second number of subcarriers may refer to a number of subcarriers (or index) corresponding to the bandwidth of the first system, e.g., LTE, the first number of resource blocks may refer to a number of RBs (or index of number) corresponding to the bandwidth of the first system, e.g., LTE, and the second resource block bitmap may refer to a RB bitmap corresponding to the bandwidth of the second system, e.g., NR, e.g., BWP. Alternatively, the bandwidth information may include at least two of first location information of the first resource unit, second location information of the second resource unit, the number of the first resource unit, or the number of the second resource unit. The first resource unit and the second resource unit may be the same or different, for example, the first resource unit and/or the second resource unit may be RB, subcarrier, etc. The network device enables the terminal device to determine a shared frequency (commonly used frequency) between systems, such as a shared frequency between LTE and NR, from the bandwidth information by indicating the bandwidth information.
In one possible design, the indication information may further be used to indicate first information, where the first information may include time domain location information occupied by the first resource, such as a number of OFDM symbols, e.g., the number of OFDM symbols may be {0,1,4,7,8,11} or {2,5,6,9} or {2,5,9} or {1,4,5,8} or {0,4,7,11} or {1,4,8} or {0,3,6,7,10} or {3,6,10} (or index of a set of numbers), which are not listed herein. The network device indicates the number of the OFDM symbol, so that the terminal device can also determine the time domain position of the first resource to be reserved according to the indication information, and further determine the first resource by combining the time domain position.
In one possible design, the indication information may further be used to indicate second information, where the second information may include frequency domain resource information, such as a subcarrier number (or index of a number set), occupied by the first resource in one resource block. The network device indicates the frequency domain resource information such as the subcarrier number (or index of the number set) occupied by the first resource in one resource block, so that the terminal device can determine the frequency domain position information of the first resource according to the subcarrier number occupied by the first resource in the one resource block, and further determine the actual position of the first resource in different areas according to the frequency domain position information of the first resource, the position of the first subcarrier, the bandwidth information and the like.
In one possible design, the indication information may further be used to indicate third information, where the third information may include frequency domain resource information and a frequency offset occupied by the second resource in one resource block, where the frequency domain resource information may include at least one of a subcarrier number (or index of number), a subcarrier number (or index of a number set). The network device indicates the frequency domain resource information and the frequency offset occupied by the second resource in the one resource block, so that the terminal device can determine the actual position of the first resource in different areas according to the frequency domain resource information and the frequency offset occupied by the second resource in the one resource block, the position of the first subcarrier, the bandwidth information and other information. The second resource may refer to a kind of occupied resource, i.e. a resource for which other systems, such as the second system, need to reserve a resource location for the second resource, e.g. the second resource may refer to a reference signal of the first system, such as CRS of LTE.
In one possible design, the indication information may also be used to indicate fourth information, which may include antenna port information and a frequency offset. The network device indicates the antenna port information and the frequency offset, so that the terminal device can determine the actual positions of the first resources in different areas according to the antenna port information such as the number of antenna ports (or index of the number of ports), the frequency offset, the position of the first subcarrier, the shared frequency and the like.
In one possible design, the indication information may further be used to indicate fifth information, where the fifth information may include frequency domain resource information and a frequency offset occupied by the first resource in one resource block, where the frequency domain resource information may include at least one of a subcarrier number (or index of number), a subcarrier number (or index of a number set). The network device indicates the frequency domain resource information and the frequency offset occupied by the first resource in one resource block, so that the terminal device can determine the actual position of the first resource in different areas according to the frequency domain resource information and the frequency offset occupied by the first resource in the one resource block, the position of the first subcarrier, the shared frequency and other information.
In yet another aspect, an embodiment of the present invention further provides a terminal device, where the terminal device has a function of implementing the terminal device behavior in the foregoing method example. The functions may be implemented by hardware, or may be implemented by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the functions described above.
In one possible design, the structure of the terminal device includes a processing unit and a communication unit, where the processing unit is configured to support the terminal device to perform the corresponding functions in the above method. The communication unit is used for supporting communication between the terminal device and other devices such as network devices. The terminal device may further comprise a memory unit for coupling with the processing unit, which holds the program instructions and data necessary for the terminal device. As an example, the processing unit may be a processor, the communication unit may be a transceiver, and the storage unit may be a memory.
In yet another aspect, an embodiment of the present invention provides a network device, where the network device has a function of implementing the network device behavior in the foregoing method example. The functions may be implemented by hardware, or may be implemented by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the functions described above.
In one possible design, the network device includes a processing unit and a communication unit in a structure, where the processing unit is configured to support the network device to perform the corresponding functions in the method. The communication unit is used for supporting communication between the network device and other devices such as terminal devices. The network device may also include a storage unit for coupling with the processing unit, which holds the program instructions and data necessary for the network device. As an example, the processing unit may be a processor, the communication unit may be a transceiver, and the storage unit may be a memory.
In yet another aspect, an embodiment of the present invention provides a communication system, which includes the terminal device and/or the network device of the above aspect. In another possible design, the system may further include other devices that interact with the terminal device or the network device in the solution provided by the embodiment of the present invention.
In yet another aspect, an embodiment of the present invention provides a computer storage medium storing computer software instructions for use with the above-described terminal device, including a program designed to execute the above-described aspects.
In yet another aspect, an embodiment of the present invention provides a computer storage medium for storing computer software instructions for use with the network device described above, including a program designed to perform the above aspects.
In yet another aspect, the present application also provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of the above aspects.
In yet another aspect, the present application provides a chip system comprising a processor for a terminal device to implement the functions involved in the above aspects, e.g. to process data and/or information involved in the above methods. In one possible design, the chip system further includes a memory for storing program instructions and data necessary for the terminal device. The chip system can be composed of chips, and can also comprise chips and other discrete devices.
In yet another aspect, the present application provides a chip system comprising a processor for supporting a network device to implement the functions involved in the above aspects, e.g. for generating data and/or information involved in the above methods. In one possible design, the system-on-chip further includes a memory to hold program instructions and data necessary for the network device. The chip system can be composed of chips, and can also comprise chips and other discrete devices.
Compared with the prior art, in the scheme provided by the embodiment of the invention, the network equipment can generate the indication information comprising the frequency position information and/or the bandwidth information to indicate the subcarrier position information in which the reference signals such as CRS in the first system such as the LTE are required to be reserved in the second system such as the NR, so that the terminal equipment can determine the position of the central subcarrier according to the frequency position information and/or determine the shared frequency of the LTE and the NR according to the bandwidth information, and further determine the positions of resources required to be reserved in different areas according to the position, the shared frequency and other information of the central subcarrier respectively, thereby solving the problem that the relative positions of the CRS positions on the left side and the right side of the central subcarrier in the resource block are inconsistent due to the resource offset phenomenon caused by the LTE central subcarrier, namely, the positions of the resources required to be reserved in one resource block on the left side and the right side of the central subcarrier are inconsistent, and being beneficial to improving the reliability of the positions required to be reserved in the determined system.
Drawings
In order to more clearly describe the embodiments of the present invention or the technical solutions in the background art, the following description will describe the drawings that are required to be used in the embodiments of the present invention or the background art.
Fig. 1 is a schematic view of a resource reservation scenario of LTE and NR;
fig. 2 is an application scenario diagram of a communication system according to an embodiment of the present invention;
FIG. 3 is an interactive schematic diagram of an information indication method according to an embodiment of the present invention;
FIG. 4 is an interactive schematic diagram of another information indication method according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a positional relationship between an LTE center subcarrier location and BWP according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of a scenario for determining a first resource according to an embodiment of the present invention;
FIG. 7 is an interactive schematic diagram of yet another information indication method according to an embodiment of the present invention;
FIG. 8 is an interactive schematic diagram of yet another information indication method according to an embodiment of the present invention;
FIG. 9 is an interactive schematic diagram of yet another information indication method according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of a terminal device according to an embodiment of the present invention;
fig. 11 is a schematic structural diagram of another terminal device according to an embodiment of the present invention;
fig. 12 is a schematic structural diagram of still another terminal device according to an embodiment of the present invention;
fig. 13 is a schematic structural diagram of a network device according to an embodiment of the present invention;
Fig. 14 is a schematic structural diagram of another network device according to an embodiment of the present invention;
fig. 15 is a schematic structural diagram of still another network device according to an embodiment of the present invention.
Detailed Description
Embodiments of the present invention will be described below with reference to the accompanying drawings in the embodiments of the present invention.
It should be understood that the technical solution of the present application may be specifically applied to various communication networks, for example: the global system for mobile communications (Global system for mobile communications, abbreviated as GSM), code Division multiple access (Code Division Multiple Access, abbreviated as CDMA), wideband code Division multiple access (Wideband Code Division Multiple Access, abbreviated as WCDMA), time Division synchronous code Division multiple access (Time Division-Synchronous Code Division Multiple Access, abbreviated as TD-SCDMA), universal mobile telecommunications system (Universal Mobile Telecommunications System, abbreviated as UMTS), long term evolution (Long Term Evolution, abbreviated as LTE) network, etc., with the development of communication technology, the technical solution of the present application may also be used in future networks, such as 5G networks, also referred to as New Radio (abbreviated as NR) networks, or may be used in D2D (device to device) networks, M2M (machine to machine) networks, etc.
In this application, the network device may refer to an entity on the network side for transmitting or receiving information, for example, a base station, or may be a transmission point (Transmission point, abbreviated as TP), a transceiver point (transmission and receiver point, abbreviated as TRP), a relay device, or other network devices with base station functions, and so on.
In this application, a terminal device is a device with a communication function, which may also be referred to as a terminal, and may include a handheld device, an in-vehicle device, a wearable device, a computing device, or other processing device connected to a wireless modem, etc. with a wireless communication function. Terminal devices in different networks may be called different names, for example: terminals, user Equipment (UE), mobile stations, subscriber units, stations, cellular telephones, personal digital assistants, wireless modems, wireless communication devices, handsets, laptops, cordless telephones, wireless local loop stations, etc. The terminal device may refer to a wireless terminal, a wired terminal. The wireless terminal may be a device providing voice and/or data connectivity to a user, a handheld device having wireless connectivity, or other processing device connected to a wireless modem, which may communicate with one or more core networks via a radio access network (e.g., RAN, radio access network).
In this application, a base station, which may also be referred to as a base station device, is a device deployed in a radio access network to provide wireless communication functionality. The names of base stations may vary in different radio access systems, e.g. in universal mobile telecommunications system UMTS networks base stations are called node bs (nodebs), in LTE networks base stations are called evolved nodebs (abbreviated enbs or enodebs), in future 5G systems may be called transceiving nodes (Transmission Reception Point, abbreviated TRP) network nodes or G nodebs (G-nodebs, gNB), etc., which are not listed here.
Referring to fig. 2, fig. 2 is an architecture diagram of a communication system according to an embodiment of the present invention. Specifically, as shown in fig. 2, the communication system may include a terminal device and a network device, where the terminal device and the network device may communicate through the communication system described above. In the case where a plurality of communication systems coexist, a situation that one system (e.g., the second system) needs to reserve resources at a resource location where another system (e.g., the first system) sends a signal of a certain type may be involved, so as to avoid interference. For example, in a scenario where LTE and 5G NR systems coexist and share spectrum resources, the NR system downlink needs to perform resource reservation at a subcarrier position corresponding to a transmission reference signal of the LTE system, such as CRS or CSI-RS, or is called rate-matching (rate-matching). The network device may instruct the terminal device to perform reservation/rate matching by sending resource location information, such as subcarrier location information that needs to be reserved for CRS of the LTE system.
Meanwhile, in some scenes, the frequency offset V is only adopted shift And the number of antenna ports of the CRS cannot accurately determine the position where resources need to be reserved in the NR system. For example, when the LTE system and the NR system similarly use a subcarrier spacing (Subcarrier Spacing, abbreviated as SCS) of 15kHz, their subcarrier positions are aligned, but since the center subcarrier of the frequency used for the LTE system downlink is not used for information transmission, there is one subcarrier offset in the subcarrier correspondence relationship between the NR and the LTE system on both sides of the subcarrier of the NR system corresponding to the center subcarrier of the LTE system. Therefore, according to the location (frequency) of the LTE center subcarrier, the location of the resource to be reserved in the NR system is different at both sides of the frequency of the center subcarrier, for example, the offset may be different, or the number in the resource block is said to be different; or the third subcarrier number included in the first resource determined in the first frequency domain range and the fourth subcarrier number included in the first resource determined in the second frequency domain range satisfy the following conditions: the remainder of the third subcarrier number divided by 3 is not equal to the remainder of the fourth subcarrier number divided by 3, or the remainder of the third subcarrier number divided by 3 differs from the remainder of the fourth subcarrier number divided by 3 by 1, i.e., there is a difference. Therefore, the network device needs to generate indication information for the distinction, so that the terminal device can respectively determine the positions of the resources to be reserved in different areas according to the indication information, thereby improving the possibility of determining the positions of the resources to be reserved in the system Reliability. The following detailed description describes that the first resources, i.e., the resources to be reserved, are different in location on both sides of the frequency of the center subcarrier (or the frequency of the first subcarrier, or the location of the first subcarrier).
In the present application, information such as the number of antenna ports, the number of subcarriers, the number, the bandwidth, etc. may be indicated, or specific values may be indicated, or index corresponding to the values may be indicated, which is not limited in the present application.
In this application, reserving resources or making a resource reservation refers to not transmitting and/or not receiving any signals, including data signals, reference signals, control signals, etc., on the resources.
In the present application, the position of the subcarrier may refer to a frequency corresponding to the subcarrier, or may be referred to as a frequency position, or may be referred to as a position frequency, which is not limited in the present application.
In this application, when resources exist in different systems at the same frequency location, the resources of the different systems may be said to be aligned. For example, RB alignment may refer to the alignment of the starting positions (e.g., starting subcarriers) of RBs of two systems at the same frequency position; such as subcarrier alignment, may refer to the presence of subcarriers for both systems at the same frequency location.
In this application, (the position of) a subcarrier is located within a bandwidth, e.g. BWP, may mean that the frequency of the subcarrier is within the frequency range of the BWP, or that the frequency range of the BWP comprises the frequency of the subcarrier; accordingly, (the location of) a subcarrier is outside a bandwidth, e.g. BWP, may mean that the frequency of the subcarrier is not within the frequency range of the BWP, or that the frequency range of the BWP does not include the frequency of the subcarrier.
In this application, the shared frequency may refer to a frequency that can be used by a plurality of systems, for example, a frequency that can be used by both LTE and NR, and may be referred to as a shared frequency of LTE and NR.
In the present application, the resource block, e.g., RB, may be physical resource block, i.e., RB with respect to the entire BWP; carrier resource block, i.e. RB with respect to the entire bandwidth, is also possible, without limitation.
The application discloses an information indication method, terminal equipment and network equipment, which are beneficial to improving the reliability of the position where the resource needs to be reserved in a determined system. Each of which is described in detail below.
Referring to fig. 3, fig. 3 is an interaction schematic diagram of an information indication method according to an embodiment of the present invention. Specifically, as shown in fig. 3, the information indication method in the embodiment of the present invention may include the following steps:
301. the network device generates indication information for indicating the frequency location information and/or the bandwidth information.
Alternatively, the frequency location information may include one of a number of the first subcarrier, an absolute radio channel number such as EARFCN (E-UTRAN Absolute Radio Frequency Channel Number), or the first frequency. The number of the first subcarrier may refer to a number of a subcarrier corresponding to a center subcarrier of a first system, such as an LTE system, in a second system, such as an NR system, and the first frequency may refer to a frequency of the LTE center subcarrier. So that the terminal device can determine the position (frequency) of the first subcarrier based on the frequency position information.
Alternatively, the bandwidth information may include one of a first bandwidth, a second number of subcarriers, a first number of resource blocks, or a second resource block bitmap. The first bandwidth may refer to a bandwidth (or index) of the first system, for example, LTE, the second number of subcarriers may refer to a number of subcarriers (or index) corresponding to the bandwidth of the first system, for example, LTE, the first number of resource blocks may refer to a number of RBs (or index) corresponding to the bandwidth of the first system, for example, LTE, and the second resource block bitmap may refer to an RB bitmap corresponding to the bandwidth of the second system, for example, NR. That is, the bandwidth information may implicitly indicate a shared frequency (i.e., a commonly used frequency) between systems such as LTE and NR, so that the terminal device can determine the shared frequency between systems such as the shared frequency between LTE and NR from the bandwidth information. Further, in the case where the bandwidth information includes a resource block bitmap, such as an RB bitmap, the starting RBs of the shared frequency need to be aligned.
Alternatively, the bandwidth information may include at least two of first location information of a first resource unit, second location information of a second resource unit, a number of the first resource unit, or a number of the second resource unit. The first resource unit and the second resource unit may be the same or different, for example, the first resource unit and/or the second resource unit may be RB, subcarrier, etc., which is not limited in this application. That is, the indication information may further include a position (e.g. number) of a starting subcarrier or RB of the shared frequency between the systems, a position of a terminating subcarrier or RB, or include a position of the starting subcarrier or RB, the number of subcarriers or RBs, or include a position of the terminating subcarrier or RB, the number of subcarriers or RBs. That is, the bandwidth information may explicitly indicate the shared frequency between systems such as LTE and NR, so that the terminal device can determine the shared frequency between systems such as the shared frequency between LTE and NR from the bandwidth information.
Alternatively, the frequency location information or bandwidth information may be pre-configured.
302. The network device sends the indication information to the terminal device.
303. And the terminal equipment determines the first resource according to the indication information.
Alternatively, the indication information may be used to indicate frequency location information; the terminal device may also determine a location of the first subcarrier based on the frequency location information. Or the terminal device may determine the location of the first subcarrier according to the frequency location information set by default. The location of the first subcarrier may refer to the number of the first subcarrier, an absolute radio channel number, or a frequency of the first subcarrier. The first resource determined in the first frequency domain range and the second frequency domain range have different positions in the resource block (for example, the third subcarrier number included in the first resource determined in the first frequency domain range and the fourth subcarrier number included in the first resource determined in the second frequency domain range satisfy that the remainder of dividing the third subcarrier number by 3 is not equal to the remainder of dividing the fourth subcarrier number by 3, or that the remainder of dividing the third subcarrier number by 3 is different from the remainder of dividing the fourth subcarrier number by 3 by 1, which will not be described in detail below). The first frequency domain range includes a second bandwidth, that is, a frequency in the shared frequency that is lower than the position of the first subcarrier, and the second frequency domain range includes a frequency in the second bandwidth that is higher than the position of the first subcarrier, where the second bandwidth is determined according to the bandwidth information. That is, in the second system, for example, the NR system, the positions (numbers, offsets, etc.) of the determined first resources in the resource blocks, for example, RBs, are different from each other on the left and right sides of the subcarrier corresponding to the center subcarrier, instead of determining the first resources according to the same positions (numbers, offsets, etc.), thereby improving the reliability of the determined reserved resources.
Further optionally, the indication information may be further used to indicate first information, where the first information may include time domain location information occupied by the first resource, such as a number of an OFDM symbol. For example, the number of the OFDM symbol may be {0,1,4,7,8,11} or {2,5,6,9} or {2,5,9} or {1,4,5,8} or {0,4,7,11} or {1,4,8} or {0,3,6,7,10} or {3,6,10}, which are not listed here. That is, the terminal device may further determine the time domain position of the first resource to be reserved according to the indication information, and further determine the first resource by combining the time domain position and the frequency domain position determined according to the information such as the frequency position information and/or the bandwidth information.
Specifically, after the network device sends the indication information to the terminal device, the terminal device may receive the indication information from the network device, and further determine, according to the indication information, a first resource, where the first resource is a reserved resource. That is, the first resource is a resource that needs to be reserved. The reserved resource means that no signal transmission is performed on the resource.
For example, the first system is LTE, the second system is NR, and the indication information is used to indicate frequency location information, so that the terminal device may determine, i.e., the location of the first subcarrier or the location of the LTE center subcarrier, such as the frequency of the center subcarrier, the absolute radio channel number, or the number of the center subcarrier corresponding to the NR, according to the frequency location information. Further, other information such as shared frequency information, information for indicating the location of the first resource may be obtained by default or may not be configured, where the information for indicating the frequency domain location of the first resource may include a frequency offset and an antenna port number, frequency domain resource information and a frequency offset occupied by the first resource in one resource block, a subcarrier number occupied by the first resource in one resource block, frequency domain resource information and a frequency offset occupied by the second resource in one resource block, and so on. The second resource may refer to a reference signal of the first system, such as CRS of LTE. For example, the terminal device may use the BWP of the entire NR as a shared frequency (e.g., in a scenario where the bandwidth of LTE is greater than or equal to the BWP of the NR system, and the frequency domain location of the BWP of the NR is within the bandwidth of LTE), default the antenna port number is any one of {1,2,4}, e.g., 4, and the frequency offset is any one of 1-6, e.g., 0, etc. Further optionally, the indication information may be further used to indicate time domain location information of the first resource, such as the number of OFDM symbols, or the time domain location information may be obtained by default, so that the terminal device can determine, according to the frequency location information and the time domain location information, the first resource, which is different in a resource block on both sides of the location of the center subcarrier in the shared frequency, such as the whole BWP range.
In this application, the difference in the positions of the resource on the left and right sides of a certain position (i.e., the position of the first subcarrier or the position of the center subcarrier) may mean that the subcarrier numbers of the resource in one RB on the left and right sides are different, or may mean that the determination manners of the first resources on the left and right sides are different. For example, when the frequency offset is the frequency offset corresponding to the left side, determining the first resource according to the mode that the frequency offset is added with 1 subcarrier corresponding to the frequency or the subcarrier number is added with 1 on the right side, and determining the first resource according to the original offset or the subcarrier number on the left side; correspondingly, if the frequency offset is the corresponding frequency offset on the right side, determining the first resource on the right side according to the original offset or the subcarrier number, and determining the first resource on the left side according to the frequency offset minus 1 subcarrier corresponding frequency or the subcarrier number minus 1. The left side refers to a frequency lower than the frequency of the position (such as the position of the center subcarrier), and the right side refers to a frequency higher than the frequency of the position, which will not be described in detail. That is, in this application, the frequency offset indicated by the indication information (or the frequency offset set by default) may refer to the frequency offset on the left side or the frequency offset on the right side, specifically may be set by default, or the network device informs the terminal device that the frequency offset is the offset on the left side or the right side, which is not limited in this application.
For another example, the indication information is used to indicate the bandwidth information, so that the terminal device can determine the shared frequency of LTE and NR according to the bandwidth information. Further, the remaining information, such as the frequency location information, information indicating the location of the first resource may be obtained by default or may not be configured. For example, the LTE center subcarrier may be default that the corresponding subcarrier in NR is outside the BWP of NR, i.e. the frequency of the LTE center subcarrier is outside the frequency range of the BWP, or the frequency location information is configured to a specific value such as-1, etc. At this time, the terminal device may determine the first resource according to information set by default for indicating the position of the first resource, where the position of the first resource in each resource block (the subcarrier number set in each RB) is the same in the entire shared frequency; or defaulting that the subcarrier corresponding to the LTE center subcarrier in NR is at the center position of BWP of NR, at this time, the terminal device may determine the first resource according to the information indicating the position of the first resource and the center position, where the positions of the first resource on the left and right sides of the center position are different. Further optionally, the indication information may be further used to indicate time domain location information of the first resource, such as the number of OFDM symbols, or the time domain location information may be obtained by default, so that the terminal device can determine the first resource according to the bandwidth information and the time domain location information.
For another example, the indication information is used for indicating frequency location information and bandwidth information, so that the terminal device can determine the location of the LTE center subcarrier in the NR, that is, the location of the first subcarrier, according to the frequency location information, and determine the shared frequency of LTE and NR according to the bandwidth information. Further, the remaining information, such as information indicating the location of the first resource, may be obtained by default. The terminal equipment can determine the first resource according to the frequency position information and the bandwidth information, wherein the first resource is different in the positions of the left side and the right side of the position of the central subcarrier in the shared frequency range. Further optionally, the indication information may be further used to indicate time domain location information of the first resource, such as the number of OFDM symbols, or the time domain location information may be obtained by default, so that the terminal device can determine the first resource according to the frequency location information, the bandwidth information, and the time domain location information.
Further optionally, the terminal device may further combine the pattern information including subcarriers in a resource block, such as second information of numbers of subcarriers occupied by the first resource in a resource block, the pattern information including subcarriers in a resource block, such as third information of frequency domain resource information occupied by the second resource in a resource block and frequency offset, fourth information including antenna port information and frequency offset, fifth information including frequency domain resource information occupied by the first resource in a resource block and frequency offset, or the like, that is, combine the information for indicating the position of the first resource, to determine the position of the resource to be reserved, that is, determine the first resource. Wherein the frequency domain resource information includes at least one of a subcarrier number (or index), and the second resource may refer to a reference signal in the first system, such as LTE CRS or CSI-RS, and so on.
For example, the indication information may indicate the frequency location information and the information for indicating the location of the first resource, such as the second information, the third information, or the fourth information, or the fifth information described above, such as a scenario in which the bandwidth in LTE is greater than or equal to the BWP of the NR system, and the frequency domain location of the NR BWP is within the LTE frequency domain bandwidth, the shared frequency is the BWP, so that the terminal device may determine the first resource according to the frequency location information and the information for indicating the location of the first resource. As another example, the indication information may indicate the bandwidth information and the information for indicating the location of the first resource such as the second information, the third information, or the fourth information described above, such as a scenario in which the frequency location information is not configured or is a certain specific value such as-1, so that the terminal device may determine the first resource according to the bandwidth information and the information for indicating the location of the first resource. Further optionally, the indication information may further indicate a time domain position of the first resource, such as a number of OFDM symbols, etc., which are not listed here.
In the embodiment of the invention, the network equipment can indicate the subcarrier position information which needs to reserve the CRS in the LTE system in the NR system according to the indication information comprising the frequency position information, the bandwidth information and other information, so that the terminal equipment can determine the position of the central subcarrier according to the frequency position information and/or determine the shared frequency of LTE and NR according to the bandwidth information, and further respectively determine the positions of resources which need to be reserved in different areas according to the position of the central subcarrier, the shared frequency and other information, thereby solving the problem that the relative positions of the CRS positions in the RBs on the left side and the right side of the central subcarrier are inconsistent due to the resource offset phenomenon caused by the LTE central subcarrier, and being beneficial to improving the reliability of the determined positions which need to reserve the resources in the system.
Referring to fig. 4, fig. 4 is an interaction schematic diagram of another information indication method according to an embodiment of the present invention. Specifically, as shown in fig. 4, the information indication method in the embodiment of the present invention may include the following steps:
401. the network device generates indication information, where the indication information is used to indicate frequency location information, bandwidth information, a number of an OFDM symbol occupied by the first resource, a frequency offset, and frequency domain resource information occupied by the first resource in one resource block.
402. The network device sends the indication information to the terminal device.
In this application, the position of the first subcarrier (or the position of the LTE center subcarrier) with respect to the NR bandwidth, such as BWP, is in the following cases, one in which the position of the first subcarrier is within the NR BWP, and the other in which the position of the first subcarrier is outside the NR BWP. As shown in fig. 5, when the position of the first subcarrier is within the NR BWP, the two scenarios include Case 1 (LTE BW is included in the NR BWP), case 2 (LTE BW partially coincides with the NR BWP, and the frequency of the LTE center subcarrier or the frequency of the first subcarrier is within the NR BWP), where Case 2 is further divided into Case 2a and Case 2b; the first subcarrier is located outside the NR BWP, and includes two scenarios of Case 3 (LTE BW partially coincides with NR BWP, and the frequency of the LTE center subcarrier or the frequency of the first subcarrier is not within NR BWP), where Case 3 is further divided into two cases of Case 3a and Case 3 b.
Alternatively, the frequency location information may refer to location information of the first subcarrier, for example, may include a number of the first subcarrier (for example, a subcarrier corresponding to the LTE center subcarrier in the NR system), an absolute radio channel number corresponding to the first subcarrier, or a frequency of the first subcarrier, that is, the first frequency. For example, if the first subcarrier is within BWP, the frequency location information may include the number of the first carrier. If the first subcarrier is outside BWP, it cannot correspond to the subcarrier number in BWP, and the frequency location information may include a field in which the frequency location information may be set to be null (not configured); or a default value, such as-1, is configured for the field; or a full bandwidth subcarrier number, but not within the range of subcarrier numbers contained within BWP (also a full bandwidth subcarrier number), such as BWP being 0-71 (subcarriers), the frequency location information may be indicated as 76 (or any other value not within the range of 0-71) to indicate that it is outside BWP.
Alternatively, the bandwidth information may include a bandwidth value of LTE, as indicated by one of {1.4,3,5,10,15,20} mhz; alternatively, the bandwidth information may include the number of RBs, as indicated by one of {6,15,25,50,75,100} RBs; alternatively, the bandwidth information may include a number of subcarriers, as indicated by one of the {72,180,300,600,900,1200} subcarriers; alternatively, the bandwidth information may include index of the above three values to indicate. Because the bandwidth of the LTE system is limited by 6 types, the method for indicating the bandwidth of the LTE system can effectively save the bit number required to be used by the indication information, and saves the system overhead. Alternatively, the bandwidth information may also include an NR downlink BWP RB bitmap (bitmap) (for example, the method may be applicable to a case where the initial RBs of the overlapping bandwidth portions of LTE and NR are aligned), etc., which is not limited in this application. For example, y1 indicates that the RB is needed for resource reservation, and y2 indicates that the RB is not needed for resource reservation. Typical values for y1 and y2 may be 1,0,1, indicating that a resource reservation is required, or that there are resources such as subcarriers to be reserved; a 0 indicates that no resource reservation is required or that there are no resources such as subcarriers to be reserved.
Alternatively, the bandwidth information may include at least two of the first location information of the first resource unit, the second location information of the second resource unit, and the number of the first resource unit or the second resource unit, that is, information of the shared frequency. For example, the bandwidth information may include a start subcarrier/rb+a stop subcarrier/RB, or may include the number of start subcarriers/rbs+subcarriers/RBs, or may include the number of stop subcarriers/rbs+subcarriers/RBs ("+" may be denoted as "sum"), or may include the number of start and stop subcarriers/rbs+subcarriers/RBs. The units of the first resource unit and the second resource unit may be the same or different, for example, both are RBs, or are subcarriers, or one is RB and the other is subcarrier, which is not limited in this application. Further, if an initial/termination RB is included, it is necessary that the RBs are aligned at the time of the initial/termination; if both the start and stop are RBs, at least one of the aligned (start RB and/or stop RB aligned) is required, and if one of the aligned RBs is the start RB or the stop RB, the user is informed of the aligned RB, or the aligned RB may be obtained by default, such as default start RB or stop RB aligned.
It should be understood that, in this application, the "bandwidth information" is just a name, and may be used to indicate bandwidth information, for example, it may represent a value, and in other scenarios, the "bandwidth information" may be also called another name, which is not limited in this application.
Optionally, the frequency domain resource information occupied by the first resource may include at least one of a subcarrier number and a subcarrier number. If the number of subcarriers is one of 2 or 4, the index can be notified; for example, the subcarrier number in one resource block may be one of [0,6], [1,7], [2,8], [3,9], [4,10], [5,11], [0,3,6,9], [1,4,7,10], [2,5,8,11], or the index of the above set may be notified. When the number of subcarriers is 2, the subcarrier number set in a corresponding resource block is: one of [0,6], [1,7], [2,8], [3,9], [4,10], [5,11], specifically indicates which one can be designated by the base station or can be determined by default; when the number of subcarriers is 4, the number set of subcarriers in a corresponding one of the resource blocks is: one of [0,3,6,9], [1,4,7,10], [2,5,8,11], specifically indicates which one can be specified by the base station or can be determined by default.
Alternatively, the frequency offset may refer to the number of offset subcarriers, or may be an offset with other granularity, or may be an offset frequency value, or the like, which is not limited in this application.
Optionally, the indication information may be further used to indicate time domain information of the first resource, such as the number of OFDM symbols. And the terminal equipment can determine the first resource by combining the time domain position and the frequency domain position determined according to the frequency position information, the bandwidth information, the frequency offset, the frequency domain resource information occupied by the first resource in one resource block and the like, so that the reliability of the determined first resource is further improved.
403. And the terminal equipment determines the first resource according to the indication information.
Specifically, after the network device sends the indication information to the terminal device, the terminal device may receive the indication information sent by the network device, and further determine the reserved first resource according to the indication information.
Optionally, after receiving the indication information, the terminal device may determine the location of the first resource in the different area by adjusting the frequency offset when determining the first resource. Specifically, it is assumed that the terminal device determines the position of the first subcarrier (that is, the position of the subcarrier corresponding to the NR system in the LTE center) according to the frequency position information, so as to obtain the first subcarrier number N c And the RB number where it is N RB (the subcarrier and RB number may be those within BWP or those of the entire bandwidth). Further, the terminal device can also determine the shared frequency through the bandwidth information and the BWP information of the terminal device itself (the bandwidth information only indicates the bandwidth information or the bandwidth information of the LTERB bitmap information of the user NR), or directly determines the shared frequency from the bandwidth information (in the case where the bandwidth information indicates information of the shared frequency), to obtain the starting subcarrier number N of the shared frequency s And a termination subcarrier number N e . If the first subcarrier location is outside BWP, then from N s To N e Is used for the frequency offset V shift，NR ＝V shift Wherein V is shift A frequency offset indicated by the indication information; if the first subcarrier location is within NR BWP, then from start subcarrier N s Start to subcarrier N c The frequency offset used is V shift，NR ＝V shift From subcarrier N c +1 to terminator subcarrier N e The frequency offset used is V shift，NR ＝V shift +1, as shown in table one below (in this scenario, the frequency offset indicated by the indication information may refer to the frequency offset on the left side). Alternatively, the frequency offset may also refer to the frequency offset on the right, i.e., from the beginning subcarrier N if the first subcarrier position is located within NR BWP s Start to subcarrier N c The frequency offset is V shift，NR ＝V shift -1, slave subcarrier N c +1 to terminator subcarrier N e The frequency offset is V shift，NR ＝V shift The method comprises the steps of carrying out a first treatment on the surface of the If the first subcarrier location is outside BWP, then from N s To N e Frequency offset V of (2) shift，NR ＝V shift -1. Wherein, the BWP information of the NR may be configured by the NR system in a system message.
List one
When the terminal equipment determines the first resource, the shared frequency initial subcarrier number N is used according to the frequency domain resource information occupied by the first resource in one resource block s And V shift,NR And obtaining the subcarrier numbers needing to be reserved. For example, the terminal device can be based on one resource blockFrequency domain resource information and frequency offset V for first resource occupation shift，NR Determining a subcarrier number set which needs to be reserved in each resource block; the number of the sub-carriers to be reserved finally (the number of the sub-carriers in the whole bandwidth, such as the number of the sub-carriers in BWP) can be obtained according to the initial number of the sub-carriers of the shared frequency.
For example, as shown in fig. 6, the number of subcarriers occupied by the first resource in one resource block is 4, and the corresponding occupied subcarriers are numbered 0,3,6,9](alternatively, the number of subcarriers indicating the first resource occupation in one resource block is 0,3,6,9 ])，V shift =4, the NR system subcarrier position corresponding to the center subcarrier of the lte system is N c =40, and N c In BWP used by NR system, the initial subcarrier of LTE and NR shared frequency is N s =4, termination subcarrier N e =76, then at N c The left shared frequency part, i.e. subcarrier numbers 4-40, v shift,NR =4, then in each resource block the first resource is numbered 0,3,6,9]Each number in (2) is added with V shift,NR Number die 12 obtained after=4 [4,7,10,1 ]]The method comprises the steps of carrying out a first treatment on the surface of the And at N c The shared frequency part on the right, namely subcarrier numbers 40-76, v shift,NR ＝V shift +1=5, then in each resource block the first resource is numbered 0,3,6,9]Each number in (2) is added with V shift,NR Number die 12 obtained after=5 [5,8,11,2 ]]. Then according to the initial subcarrier N of the shared frequency s =4, and the position of each subcarrier in the resource block in the NR system, can be determined at N c The number of the sub-carriers to be reserved on the left side is [4,7,10,13 and … 28,31,34,37 ]](numbering in BWP); at N c The subcarriers to be reserved on the right side are [41,44,47, … 65,68,71,74 ]]。
It should be understood that there may be different ways for the terminal device to determine the first resource, but when determining the frequency offset, when the first subcarrier position is within BWP, the frequency offset is different on the left and right sides of the position of the center subcarrier, and there is 1 more on the right side than on the left side, i.e. one more subcarrier frequency offset; when the first subcarrier location is outside BWP, the entire offset pattern is only one, i.e., the indication information includes a frequency offset.
Alternatively, the terminal device may also directly implement the offset of the subcarrier number when determining the first resource. Specifically, when the first subcarrier is in the NR BWP, the terminal device may determine the frequency domain information occupied by the first resource in one resource block and V shift The information gets the subcarrier number (number in one resource block) that needs to be reserved in one resource block. For example, the terminal device can determine the number of subcarriers (or subcarrier numbers) occupied by the first resource in one resource block and the frequency offset V shift Obtaining subcarrier number information occupied by a first resource in one resource block; then according to the serial number N of the initial sub-carrier of the shared frequency s Determining that the subcarrier temporary number of the first resource in the shared frequency part is: k (k) NR (subcarrier numbers in the entire bandwidth, such as subcarrier numbers within BWP). Then at the center subcarrier location N c The subcarrier number of the first resource of the left shared frequency portion is: k (k) NR The method comprises the steps of carrying out a first treatment on the surface of the At N c The shared frequency part on the right side, the subcarrier number of the first resource is: k (k) NR +1. When the first subcarrier is outside the NR BWP, the subcarrier number of the first resource is: k (k) NR . As shown in table two below. That is, k NR Is a function of the resource block number, the subcarrier number occupied by the first resource in each resource block, and the frequency offset.
Watch II
It should be understood that there may be different ways for the terminal device to determine the first resource, but when determining the final reserved resource, the subcarrier number calculation method on the left and right sides of the position of the center subcarrier is different when the first subcarrier position is located in BWP, and the number is 1 more on the right side than on the left side, i.e. the offset of the frequency is one subcarrier more, i.e. if the calculation formula on the left side is k NR The calculation formula on the right side is k NR +1; when the first isWhen the subcarrier position is outside BWP, only one calculation formula k is provided NR 。
In the embodiment of the invention, the network equipment can indicate the subcarrier position information which needs to reserve the CRS in the LTE system according to the frequency position information, the bandwidth information, the time domain position information, the frequency offset and the frequency domain position information occupied by the first resource in one resource block, so that the terminal equipment can determine the position of the center subcarrier according to the frequency position information, determine the shared frequency of LTE and NR according to the bandwidth information, and further respectively determine the positions of resources which need to be reserved in different areas on the left and right sides of the position of the center subcarrier according to the frequency offset and the frequency domain position information occupied by the first resource in one resource block.
Referring to fig. 7, fig. 7 is an interaction schematic diagram of another information indication method according to an embodiment of the present invention. Specifically, as shown in fig. 7, the information indication method in the embodiment of the present invention may include the following steps:
701. the network device generates indication information for indicating frequency location information, bandwidth information, a number of an OFDM symbol occupied by the first resource, a frequency offset, and antenna port information.
702. The network device sends the indication information to the terminal device.
In this application, the position of the first subcarrier (or the position of the LTE center subcarrier) with respect to the NR bandwidth, such as BWP, is in the following cases, one in which the position of the first subcarrier is within the NR BWP, and the other in which the position of the first subcarrier is outside the NR BWP. As shown in fig. 5, when the position of the first subcarrier is within the NR BWP, the two scenarios include Case 1 (LTE BW is included in the NR BWP), case 2 (LTE BW partially coincides with the NR BWP, and the frequency of the LTE center subcarrier or the frequency of the first subcarrier is within the NR BWP), where Case 2 is further divided into Case 2a and Case 2b; the first subcarrier is located outside the NR BWP, and includes two scenarios of Case 3 (LTE BW partially coincides with NR BWP, and the frequency of the LTE center subcarrier or the frequency of the first subcarrier is not within NR BWP), where Case 3 is further divided into two cases of Case 3a and Case 3 b.
Alternatively, the frequency location information may refer to location information of the first subcarrier, for example, may include a number of the first subcarrier (for example, a subcarrier corresponding to the LTE center subcarrier in the NR system), an absolute radio channel number corresponding to the first subcarrier, or a frequency of the first subcarrier, that is, the first frequency. For example, if the first subcarrier is within BWP, the frequency location information may include the number of the first carrier. If the first subcarrier is outside BWP, it cannot correspond to the subcarrier number in BWP, and the frequency location information may include a field in which the frequency location information may be set to be null (not configured); or a default value, such as-1, is configured for the field; or a full bandwidth subcarrier number, but not within the range of subcarrier numbers contained within BWP (also a full bandwidth subcarrier number), such as BWP being 0-71 (subcarriers), the frequency location information may be indicated as 76 (or any other value not within the range of 0-71) to indicate that it is outside BWP.
Alternatively, the bandwidth information may include a bandwidth value of LTE, as indicated by one of {1.4,3,5,10,15,20} mhz; alternatively, the bandwidth information may include the number of RBs, as indicated by one of {6,15,25,50,75,100} RBs; alternatively, the bandwidth information may include a number of subcarriers, as indicated by one of the {72,180,300,600,900,1200} subcarriers; alternatively, the bandwidth information may include index of the above three values to indicate. Because the bandwidth of the LTE system is limited by 6 types, the method for indicating the bandwidth of the LTE system can effectively save the bit number required to be used by the indication information, and saves the system overhead. Alternatively, the bandwidth information may also include an NR downlink BWP RB bitmap (bitmap) (for example, the method may be applicable to a case where the initial RBs of the overlapping bandwidth portions of LTE and NR are aligned), etc., which is not limited in this application. For example, y1 indicates that the RB is needed for resource reservation, and y2 indicates that the RB is not needed for resource reservation. Typical values for y1 and y2 may be 1,0,1, indicating that a resource reservation is required, or that there are resources such as subcarriers to be reserved; a 0 indicates that no resource reservation is required or that there are no resources such as subcarriers to be reserved.
Alternatively, the bandwidth information may include at least two of the first location information of the first resource unit, the second location information of the second resource unit, and the number of the first resource unit or the second resource unit, that is, information of the shared frequency. For example, the bandwidth information may include a start subcarrier/rb+a stop subcarrier/RB, or may include the number of start subcarriers/rbs+subcarriers/RBs, or may include the number of stop subcarriers/rbs+subcarriers/RBs, or may include the number of start and stop subcarriers/RBs. The units of the first resource unit and the second resource unit may be the same or different, for example, both are RBs, or are subcarriers, or one is RB and the other is subcarrier, which is not limited in this application. Further, if an initial/termination RB is included, it is necessary that the RBs are aligned at the time of the initial/termination; if both the start and stop are RBs, at least one of the aligned (start RB and/or stop RB aligned) is required, and if one of the aligned RBs is the start RB or the stop RB, the user is informed of the aligned RB, or the aligned RB may be obtained by default, such as default start RB or stop RB aligned.
It should be understood that, in this application, the "bandwidth information" is just a name, and may be used to indicate bandwidth information, for example, it may represent a value, and in other scenarios, the "bandwidth information" may be also called another name, which is not limited in this application.
Alternatively, the antenna Port information may include the Port number, as indicated by {1,2,4} or index thereof.
Alternatively, the frequency offset may refer to the number of offset subcarriers, or may be an offset with other granularity, or may be an offset frequency value, or the like, which is not limited in this application.
Optionally, the indication information may be further used to indicate time domain information of the first resource, such as the number of OFDM symbols. And the terminal equipment can determine the first resource by combining the time domain position and the frequency domain position determined according to the information such as the frequency position information, the bandwidth information, the frequency offset, the antenna port information and the like, so that the reliability of the determined first resource is further improved.
703. And the terminal equipment determines the first resource according to the indication information.
Specifically, after the network device sends the indication information to the terminal device, the terminal device may receive the indication information sent by the network device, and further determine the reserved first resource according to the indication information.
Optionally, after receiving the indication information, the terminal device may determine the location of the first resource in the different area by adjusting the frequency offset when determining the first resource. Specifically, it is assumed that the terminal device determines the position of the first subcarrier (that is, the position of the subcarrier corresponding to the NR system in the LTE center) according to the frequency position information, so as to obtain the first subcarrier number N c And the RB number where it is N RB (the subcarrier and RB number may be those within BWP or those of the entire bandwidth). Further, the terminal device may also determine the shared frequency (bandwidth information only indicates bandwidth information of LTE or RB bitmap information of NR) through the bandwidth information and BWP information of the terminal device itself, or directly determine the shared frequency (bandwidth information indicates information of shared frequency) through the bandwidth information, to obtain the starting subcarrier number N of the shared frequency s And a termination subcarrier number N e . If the first subcarrier location is outside BWP, then from N s To N e Frequency offset V of (2) shift，NR ＝V shift The method comprises the steps of carrying out a first treatment on the surface of the If the first subcarrier location is within NR BWP, then from start subcarrier N s Start to subcarrier N c The frequency offset is V shift，NR ＝V shift From subcarrier N c +1 to terminator subcarrier N e The frequency offset is V shift，NR ＝V shift +1 as shown in table one above (in this scenario, the frequency offset indicated by the indication information may refer to the frequency offset on the left side). Alternatively, the frequencyThe offset may also refer to the frequency offset to the right, i.e. from the start subcarrier N if the first subcarrier position is within NR BWP s Start to subcarrier N c The frequency offset is V shift，NR ＝V shift -1, slave subcarrier N c +1 to terminator subcarrier N e The frequency offset is V shift，NR ＝V shift And are not described in detail herein; if the first subcarrier location is outside BWP, then from N s To N e Frequency offset V of (2) shift，NR ＝V shift -1. Wherein, the BWP information of the NR may be configured by the NR system in a system message.
When the terminal equipment determines the first resource, the terminal equipment is used for determining the first resource according to the number of antenna ports and V shift,NR And obtaining the subcarrier numbers needing to be reserved. For example, the terminal device may be based on the number of antenna ports and the frequency offset V shift，NR According to a formula for determining CRS subcarrier location information in an LTE system, for example (the time domain information in an LTE system, i.e. the OFDM symbol number, may be defaulted to 0 at this time, all frequency domain offsets are embodied in V shift Upper) obtaining the third subcarrier number information k Temp (subcarrier numbers in the entire bandwidth, such as subcarrier numbers within BWP); obtaining initial frequency offset N according to the central subcarrier position and bandwidth information re The final location information of the reserved resource, e.g. number k of the first resource NR (subcarrier numbers in the entire bandwidth, e.g., subcarrier numbers within BWP) are: k (k) NR ＝k Temp +N re . For example, as shown in fig. 6, assume that antenna port information such as antenna ports is 4, v shift =0, and the position of the NR system subcarrier corresponding to the center subcarrier of the lte system is N c =40, and N c In BWP allocated to downlink user by NR system, initial subcarrier of LTE and NR shared frequency is N s =4, termination subcarrier N e =76, then at N c The left shared frequency part, i.e. subcarrier numbers 4-40, v shift,NR =0, according to the method of calculating CRS frequency domain position by LTE (default time domain information in LTE system, and OFDM symbol number of 0, the following is the default mode, no longerIn detail, the frequency offset used is V shift,NR ) The resulting subcarrier locations are [0,3,6,9, … 24,27,30,33 ]]The method comprises the steps of carrying out a first treatment on the surface of the And at N c The shared frequency part on the right, i.e. subcarrier numbers 41-76, v shift,NR ＝V shift +1=1, and the subcarrier position [37,40,43 … 61,64,67,70 ] can be obtained by the method of calculating the CRS frequency domain position according to LTE ]. The initial frequency offset at this time is 4 subcarriers, then the subcarriers that eventually need to be reserved in NR are at N c The left side is the subcarrier position plus frequency initial offset 4 obtained by the method for calculating the CRS position according to LTE, which is [4,7,10,13 and … 28,31,34,37 ]]The method comprises the steps of carrying out a first treatment on the surface of the At N c The subcarrier to be reserved on the right side is calculated by adding frequency initial offset 4 to the subcarrier position calculated by the LTE CRS calculation method, and the position is [41,44,47, … 65,68,71,74 ]]。
Alternatively, the terminal device may also perform resource reservation according to the number of subcarriers within the whole bandwidth portion, e.g. BWP. For example, when the number of antenna ports is 1, the number of subcarriers occupied by the first resource in a corresponding one of the resource blocks is 2, or the subcarrier number occupied by the first resource in one of the resource blocks is [0,6]; when the number of antenna ports is 2 or 4, the number of subcarriers occupied by the first resource in a corresponding one of the resource blocks is 4, or the subcarrier numbers occupied by the first resource in one of the resource blocks is [0,3,6,9]. The subcarrier number of the first resource (this number is the subcarrier number within the entire bandwidth, such as the number within BWP) is then calculated according to the remaining parameters with reference to the related description of the embodiment shown in fig. 4, which is not described here.
It should be understood that there may be different ways for the terminal device to determine the first resource, but when determining the frequency offset, when the first subcarrier position is within BWP, the frequency offset is different on the left and right sides of the position of the center subcarrier, and there is 1 more on the right side than on the left side, i.e. one more subcarrier frequency offset; when the first subcarrier location is outside BWP, the entire offset pattern is only one, i.e., the indication information includes a frequency offset.
Alternatively, the terminal device may also be implemented directly by subcarrier offset when determining the first resource. Specifically, when the first subcarrier is within the NR BWP, the terminal device mayAccording to the number of antenna ports and V shift The information gets the subcarrier number that needs to be reserved. For example, the terminal device may calculate CRS frequency domain location information according to LTE based on the number of antenna ports and frequency offset (at this time, the time domain information in LTE system, i.e. OFDM symbol number, may be defaulted to 0, and all frequency offset is represented in V shift Above) obtaining subcarrier number information k of CRS in LTE system LTE The method comprises the steps of carrying out a first treatment on the surface of the Then according to the central sub-carrier position and bandwidth information, the initial frequency offset N can be obtained re Number k of the first resource NR I.e. the final reserved resource is located at N c The shared frequency part on the left is k NR ＝k LTE +N re ；k NR At N c The shared frequency portion on the right is: k (k) NR ＝k LTE +N re +1. When the first subcarrier is outside NR BWP, then the number k of the first resource NR I.e. the final reserved resource locations are: k (k) NR ＝k LTE +N re As shown in table two above. That is, k NR Is a function of the number of antenna ports and the frequency offset.
Alternatively, the terminal device may also perform resource reservation according to the number of subcarriers within the entire bandwidth, such as BWP. For example, when the number of antenna ports is 1, the number of subcarriers occupied by the first resource in a corresponding one of the resource blocks is 2, or the subcarrier number occupied by the first resource in one of the resource blocks is [0,6]; when the number of antenna ports is 2 or 4, the number of subcarriers occupied by the first resource in a corresponding one of the resource blocks is 4, or the subcarrier numbers occupied by the first resource in one of the resource blocks is [0,3,6,9]. The subcarrier number of the first resource (the subcarrier number in the whole bandwidth, e.g. BWP) is then calculated according to the remaining parameters as described in relation to the embodiment shown in fig. 4, which is not repeated here.
It should be understood that there may be different ways for the terminal device to determine the first resource, but when determining the final reserved resource, the subcarrier number calculation method on the left and right sides of the position of the center subcarrier is different when the first subcarrier position is located in BWP, and the number is 1 more on the right side than on the left side, i.e. the number is offset by one subcarrier more than on the left side, i.e. if the left side calculation formulaIs k NR The calculation formula on the right side is k NR +1; when the first subcarrier position is outside BWP, then only one calculation formula k is used NR 。
In the embodiment of the invention, the network equipment can indicate the subcarrier position information which needs to reserve the CRS in the LTE system in the NR system according to the indication information comprising the frequency position information, the bandwidth information, the time domain position information, the frequency offset and the antenna port information, so that the terminal equipment can determine the position of the center subcarrier according to the frequency position information, determine the shared frequency of LTE and NR according to the bandwidth information, and further respectively determine the positions of resources which need to be reserved at the left side and the right side of the position of the center subcarrier, namely different areas according to the frequency offset, the antenna port information and other information, thereby solving the problem that the relative positions of the CRS positions at the left side and the right side of the center subcarrier in the RB are inconsistent due to the resource offset phenomenon caused by the LTE center subcarrier, and improving the reliability of the position which needs to reserve the resources in the determined system.
Referring to fig. 8, fig. 8 is an interaction schematic diagram of another information indication method according to an embodiment of the present invention. Specifically, as shown in fig. 8, the information indication method in the embodiment of the present invention may include the following steps:
801. the network device generates indication information, where the indication information is used to indicate frequency location information, bandwidth information, a number of an OFDM symbol occupied by a first resource, frequency domain resource information occupied by a second resource in one resource block, and a frequency offset.
Wherein, the resource information may include at least one of subcarrier number (or index) and subcarrier number. The second resource may refer to a reference signal in the first system, such as LTE CRS.
Alternatively, the resource information occupied by the second resource in the one resource block may refer to resource information occupied by the second resource (e.g., CRS) in each RB. For example, the resource information may include the number of subcarriers {2,4}, or index thereof, to indicate by the number of subcarriers or index; wherein, when the number of the subcarriers is 2, the corresponding subcarrier numbers can be one of [0,6], [1,7], [2,8], [3,9], [4,10], [5,11], and when the number of the subcarriers is 4, the corresponding subcarrier numbers are one of [0,3,6,9], [1,4,7,10], [2,5,8,11] (the number at this time is the subcarrier number in one RB); or may be indicated by indicating its index. It should be understood that the above numbers of [0,6], [0,3,6,9], [1,7], [1,4,7,10], etc. refer to subcarrier numbers in one RB.
Specifically, the description of the frequency location information, the bandwidth information, the frequency offset, the time domain location information, etc. refer to the relevant description of the frequency location information, the bandwidth information, the frequency offset, the time domain location information in the corresponding embodiments of fig. 3 to 4, which are not repeated herein.
802. The network device sends the indication information to the terminal device.
803. And the terminal equipment determines the first resource according to the indication information.
Specifically, after the network device sends the indication information to the terminal device, the terminal device may receive the indication information sent by the network device, and further determine the reserved first resource according to the indication information.
Optionally, the frequency domain resource information occupied by the second resource in the one resource block, such as subcarrier pattern information in RB, may indicate information on the left side of the center subcarrier position, or may indicate information on the right side of the center subcarrier position, which is not limited in this application. The subcarrier pattern information in the RB indicating the left side of the center subcarrier position is described as an example. When determining the first resource, the terminal device can obtain the first subcarrier number N through the position of the first subcarrier (i.e., the subcarrier position of the LTE center subcarrier corresponding to the NR system) c And the RB number where it is N RB (the subcarrier number may be a subcarrier number within BWP or a subcarrier number of the entire bandwidth). Furthermore, the terminal device may also determine the shared frequency through the bandwidth information and the BWP information of the terminal device itself, or directly determine the shared frequency through the bandwidth information, to obtain the starting subcarrier number N s And a termination subcarrier number N e And are not described in detail herein.
Advancing oneStep, if N c Within BWP, slave subcarrier N s To N c The terminal device can perform resource reservation according to the position of each subcarrier in the RB in combination with the subcarrier pattern and the offset, for example, the subcarrier number of the subcarrier pattern in the RB is k, and the terminal device numbers (k+V) in each RB shift ) The subcarrier of mod12 is determined as a reserved resource, i.e., the subcarrier number of the reserved resource in each RB, which is the number of the subcarrier in each RB, is (k+v shift ) mod 12; slave subcarrier N c +1 to N e The terminal equipment determines reserved resources according to the specific position of each subcarrier in the RB by combining the subcarrier pattern and the corresponding frequency offset, for example, the subcarrier number of the subcarrier pattern in the RB is k, and the terminal equipment numbers (k+V) in each RB shift +1) the subcarriers of mod 12 are determined as reserved resources, i.e., the subcarrier number of reserved resources in each RB, which is the number of subcarriers in each RB, is (k+V) shift +1) mod 12. If N c If the subcarrier is located outside BWP, all subcarriers in the shared frequency determine reserved resources according to the subcarrier pattern and corresponding frequency offset in the RB according to the specific position of the subcarrier in the RB, for example, the subcarrier number of the subcarrier pattern in the RB is k, and the terminal equipment numbers the subcarrier number (k+V) in each RB shift ) The subcarrier of mod 12 is determined as a reserved resource, i.e., the subcarrier number of the reserved resource in each RB, which is the number of the subcarrier in each RB, is (k+v shift ) mod 12. Wherein mod is a modulo operation. Alternatively, the frequency domain resource information occupied by the first resource in one resource block may be determined from the frequency domain resource information occupied by the second resource in one resource block, the center subcarrier position information, and the bandwidth information. According to the description of the embodiment shown in fig. 4, the subcarrier number (the subcarrier number in the whole bandwidth, such as the BWP) of the first resource is calculated according to the frequency resource information, the frequency offset, the frequency position, the bandwidth information, etc. occupied by the first resource in one resource block, which is not described herein.
Alternatively, if the bandwidth information includes start and stop RB numbers such as RB IDs,at this time, the initial RBs of the shared frequency of LTE and NR are aligned, and there may be a waste of resources, i.e. several more subcarriers may be reserved. For example, the initial and terminated RBs are numbered N RBs And N RBe The first subcarrier number N can be obtained by the position of the first subcarrier (subcarrier position of the LTE center subcarrier corresponding to the NR system) c And the RB number where it is N RBc (the subcarrier number may be a subcarrier number within BWP or a subcarrier number of the entire bandwidth). Further, the number of the initial and the termination subcarriers can be obtained by starting and terminating the number of the RB to be 12×n respectively RBs And 12 x N RBe +11, and the terminal device can then transmit data according to the first subcarrier N c Determining the 12 x N in BWP and outside BWP RBs To 12 x N RBe The first resources in the +11 range are determined in a similar manner to the above method and are not described here.
Alternatively, if the bandwidth information includes an RB bitmap, the terminal device may obtain the first RB number of y1 and the last RB number of y1, that is, the starting and ending RBs, such as N, respectively, through the bitmap information RBs And N RBe . Further, the terminal device can be based on the first subcarrier N c Inside and outside BWP, determine the N RBs To N RBe The first resource in the range is determined in a similar manner to the method described above, and is not described here. Further optionally, the indication information may be further used to indicate time domain information of the first resource, such as the number of OFDM symbols. And the terminal equipment can determine the first resource by combining the time domain position and the frequency domain position determined according to the frequency position information, the bandwidth information, the resource information occupied by the second resource in one resource block, the frequency offset and other information, so that the reliability of the determined first resource is further improved.
In the embodiment of the invention, the network equipment can indicate the subcarrier position information which needs to reserve the CRS in the LTE system according to the indication information comprising the frequency position information, the bandwidth information, the time domain position information, the resource information occupied by the second resource in one resource block and the frequency offset, so that the terminal equipment can determine the position of the center subcarrier according to the frequency position information, determine the shared frequency of LTE and NR according to the bandwidth information, and further respectively determine the positions of resources which need to be reserved in different areas on the left and right sides of the position of the center subcarrier according to the information such as the resource information occupied by the second resource in one resource block and the frequency offset, thereby solving the problem that the relative positions of the CRS positions on the left and right sides of the center subcarrier in the RB are inconsistent due to the resource offset phenomenon caused by the LTE center subcarrier, and improving the reliability of the determined position which needs to reserve the resources in the system.
Referring to fig. 9, fig. 9 is an interaction schematic diagram of another information indication method according to an embodiment of the present invention. Specifically, as shown in fig. 9, the information indication method in the embodiment of the present invention may include the following steps:
901. the network device generates indication information, where the indication information is used to indicate frequency location information, bandwidth information, a number of a subcarrier occupied by a first resource in one resource block, and a number of an OFDM symbol occupied by the first resource.
The first resource may refer to a resource to be reserved in the second system, for example, a subcarrier to be reserved in NR.
Optionally, the subcarrier number occupied by the first resource in the one resource block may include one of [0,6], [1,7], [2,8], [3,9], [4,10], [5,11], [0,3,6,9], [1,4,7,10], [2,5,8,11] (the number in this case is the subcarrier number in one RB); or may be indicated by index indicating the above set. As another example, the resource information may include index of a subcarrier number or a number set in one RB, e.g., the resource information may indicate one of subcarrier numbers of [0,6], [1,7], [2,8], [3,9], [4,10], [5,11], [0,3,6,9], [1,4,7,10], [2,5,8,11], or may indicate index of both subcarrier sets thereon, etc., and the application is not limited thereto.
Specifically, for the description of the frequency location information, the bandwidth information, the time domain location information, such as the number of OFDM symbols, etc., please refer to the description of the frequency location information, the bandwidth information, the time domain location information in the corresponding embodiments of fig. 3 to 4, which is not repeated here.
902. The network device sends the indication information to the terminal device.
903. And the terminal equipment determines the first resource according to the indication information.
Specifically, after the network device sends the indication information to the terminal device, the terminal device may receive the indication information sent by the network device, and further determine the reserved first resource according to the indication information.
Optionally, the subcarrier number occupied by the first resource in the resource block, that is, subcarrier pattern information in the RB may indicate information on the left side of the center subcarrier position, or may indicate information on the right side of the center subcarrier position, which is not limited in this application. The subcarrier pattern information in the RB indicating the left side of the center subcarrier position is described as an example. When determining the first resource, the terminal device can obtain the first subcarrier number N through the position of the first subcarrier (i.e., the subcarrier position of the LTE center subcarrier corresponding to the NR system) c And the RB number where it is N RB (the subcarrier number may be a subcarrier number within BWP or a subcarrier number of the entire bandwidth). Furthermore, the terminal device may also determine the shared frequency through the bandwidth information and the BWP information of the terminal device itself, or directly determine the shared frequency through the bandwidth information, to obtain the starting subcarrier number N s And a termination subcarrier number N e And are not described in detail herein.
Further, if N c Within BWP, slave subcarrier N s To N c The terminal device may perform resource reservation according to the position of each subcarrier in the RB, i.e., according to the subcarrier number k in the subcarrier pattern in each RB, i.e., the number of reserved subcarriers in each RB (the number is the number of subcarriers in each RB) is (k); slave subcarrier N c +1 to N e The terminal device may reserve resources for each subcarrier according to the subcarrier number (k+1) mod 12 in the subcarrier pattern in each RB according to the specific position of the subcarrier in the RB. If N c Outside BWP, then endThe end device may reserve resources for all subcarriers according to their specific locations in the RB, i.e. according to the subcarrier numbers in the subcarrier pattern in each RB. Or according to the related description in the embodiment shown in fig. 4, the subcarrier number (the whole bandwidth, such as the subcarrier number in BWP) of the first resource is calculated according to the subcarrier number information, the frequency offset, the frequency position, the bandwidth information, etc. occupied by the first resource in one resource block, which is not described herein.
Alternatively, if the bandwidth information includes the start and stop RB numbers such as RB IDs, there may be a case where resources are wasted, i.e., several subcarriers may be reserved more. For example, the initial and terminated RBs are numbered N RBs And N RBe The first subcarrier number N can be obtained by the position of the first subcarrier (subcarrier position of the LTE center subcarrier corresponding to the NR system) c And the RB number where it is N RBc (the subcarrier number may be a subcarrier number within BWP or a subcarrier number of the entire bandwidth). Further, the number of the initial and the termination subcarriers can be obtained by starting and terminating the number of the RB to be 12×n respectively RBs And 12 x N RBe +11, and the terminal device can then transmit data according to the first subcarrier N c Determining the 12 x N in BWP and outside BWP RBs To 12 x N RBe The first resources in the +11 range are determined in a similar manner to the above method and are not described here.
Alternatively, if the bandwidth information includes an RB bitmap, the terminal device may obtain the first RB number of y1 and the last RB number of y1, that is, the starting and ending RBs, such as N, respectively, through the bitmap information RBs And N RBe . Further, the terminal device can be based on the first subcarrier N c Inside and outside BWP, determine the N RBs To N RBe The first resource in the range is determined in a similar manner to the method described above, and is not described here.
In the embodiment of the invention, the network equipment can indicate the subcarrier position information which needs to reserve the CRS in the LTE system according to the indication information comprising the frequency position information, the bandwidth information, the time domain position information and the resource information occupied by the first resource in one resource block, so that the terminal equipment can determine the position of the center subcarrier according to the frequency position information, determine the shared frequency of LTE and NR according to the bandwidth information, and further respectively determine the positions of resources which need to be reserved at the left side and the right side of the position of the center subcarrier, namely at different areas according to the resource information occupied by the first resource in the one resource block, thereby solving the problem that the relative positions of the CRS positions at the left side and the right side of the center subcarrier are inconsistent due to the resource offset phenomenon caused by the LTE center subcarrier, and improving the reliability of the position which needs to reserve the resource in the determined system.
The foregoing method embodiments are all illustrative of the information indication method of the present application, and the description of each embodiment has emphasis, and for the part of a certain embodiment that is not described in detail, reference may be made to the related description of other embodiments.
Fig. 10 shows a schematic diagram of a possible structure of the terminal device involved in the above embodiment, and referring to fig. 10, the terminal device 1000 may include: a communication unit 1001 and a processing unit 1002. Wherein these units may perform the respective functions of the terminal device in the above method example, for example, the communication unit 1001 is configured to receive indication information from the network device, where the indication information is used to indicate at least one of frequency location information or bandwidth information, where the frequency location information includes one of a number of first subcarriers, an absolute radio channel number, or a first frequency, and the bandwidth information includes one of a first bandwidth, a second number of subcarriers, a first number of resource blocks, or a second bitmap of resource blocks; the processing unit 1002 is configured to determine a first resource according to the indication information, where the first resource is a reserved resource.
Optionally, the processing unit 1002 may be further configured to determine a location of the first subcarrier according to the frequency location information. The positions of the first resources in the resource blocks, which are determined in the first frequency domain range and the second frequency domain range, are different; or, the third subcarrier number included in the first resource determined in the first frequency domain range and the fourth subcarrier number included in the first resource determined in the second frequency domain range satisfy: the remainder of the third subcarrier number divided by 3 is not equal to the remainder of the fourth subcarrier number divided by 3, or the remainder of the third subcarrier number divided by 3 differs from the remainder of the fourth subcarrier number divided by 3 by 1. The first frequency domain range includes frequencies in a second bandwidth that are lower than the first subcarrier, the second frequency domain range includes frequencies in the second bandwidth that are higher than the first subcarrier, and the second bandwidth is determined according to the bandwidth information.
Optionally, the indication information is further used for indicating first information, where the first information includes a number of an orthogonal frequency division multiplexing OFDM symbol occupied by the first resource. For example, the numbering includes: {0,1,4,7,8,11} or {2,5,6,9} or {2,5,9} or {1,4,5,8} or {0,4,7,11} or {1,4,8} or {0,3,6,7,10} or {3,6,10}.
Optionally, the indication information is further used for indicating second information, where the second information includes resource information occupied by the first resource in one resource block, and the resource information includes at least one of the number of subcarriers and the subcarrier number.
Optionally, the indication information is further used for indicating third information, where the third information includes resource information and frequency offset occupied by the second resource in one resource block, and the resource information includes at least one of the number of subcarriers and the subcarrier number.
Optionally, the indication information is further used for indicating fourth information, and the fourth information includes antenna port information and a frequency offset.
It should be noted that, in the embodiment of the present invention, the division of the units is schematic, which is merely a logic function division, and other division manners may be implemented in actual practice. The functional units in the embodiment of the invention can be integrated in one processing unit, or each unit can exist alone physically, or two or more units are integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
In case of using an integrated unit, fig. 11 shows another possible structural schematic diagram of the terminal device involved in the above embodiment, and as shown in fig. 11, the terminal device 1100 may include: a processing unit 1102 and a communication unit 1103. The processing unit 1102 may be used to control and manage actions of the terminal device, e.g., the processing unit 1102 is used to support the terminal device to perform process 303 in fig. 3, process 403 in fig. 4, process 803 in fig. 8, process 903 in fig. 9, and/or other processes for the techniques described herein. The communication unit 1103 is used to support communication between the terminal device and other network entities, for example, communication with the functional units or network entities shown in fig. 3 to 10, such as network devices. The terminal device may further comprise a storage unit 1101 for storing program code and data of the terminal device.
The processing unit 1102 may be a processor or controller, such as a central processing unit (Central Processing Unit, CPU), general purpose processor, digital signal processor (Digital Signal Processor, DSP), application-specific integrated circuit (ASIC), field programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic device, transistor logic device, hardware component, or any combination thereof. Which may implement or perform the various exemplary logic blocks, modules, and circuits described in connection with this disclosure. The processor may also be a combination that performs the function of a computation, e.g., a combination comprising one or more microprocessors, a combination of a DSP and a microprocessor, and the like. The communication unit 1103 may be a transceiver or may also include separate receivers and transmitters. The storage unit 1101 may be a memory.
Referring to fig. 12, in another embodiment, the terminal device 1200 may include: a processor 1202, a transceiver 1203, and a memory 1201. Wherein the transceiver 1203, the processor 1202 and the memory 1201 may be interconnected. The processor may perform the functions of the processing unit 1102, the transceiver may be similar to the functions of the communication unit 1103, and the memory may be similar to the functions of the storage unit 1101, which is not repeated herein.
The steps of a method or algorithm described in connection with the disclosure herein may be embodied in hardware, or may be embodied in software instructions executed by a processor. The software instructions may be comprised of corresponding software modules that may be stored in random access Memory (Random Access Memory, RAM), flash Memory, read Only Memory (ROM), erasable programmable Read Only Memory (Erasable Programmable ROM), electrically Erasable Programmable Read Only Memory (EEPROM), registers, hard disk, a removable disk, a compact disc Read Only Memory (CD-ROM), or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium may be integral to the processor. The processor and the storage medium may reside in an ASIC. In addition, the ASIC may reside in a terminal device. The processor and the storage medium may reside as discrete components in a terminal device.
Fig. 13 shows a schematic diagram of a possible architecture of the network device involved in the above embodiment, and referring to fig. 13, the network device 1300 may include: a processing unit 1301, and a communication unit 1302. Wherein these units may perform the respective functions of the network device in the above method example, e.g. the processing unit 1301 is configured to generate indication information, where the indication information is used to indicate at least one of frequency location information or bandwidth information, where the frequency location information includes one of a number of first subcarriers, an absolute radio channel number, or a first frequency, and the bandwidth information includes one of a first bandwidth, a second number of subcarriers, a first number of resource blocks, or a second resource block bitmap; a communication unit 1302, configured to send the indication information to a terminal device.
Optionally, the indication information is further used for indicating first information, where the first information includes a number of an orthogonal frequency division multiplexing OFDM symbol occupied by the first resource. For example, the numbering includes: {0,1,4,7,8,11} or {2,5,6,9} or {2,5,9} or {1,4,5,8} or {0,4,7,11} or {1,4,8} or {0,3,6,7,10} or {3,6,10}.
Optionally, the indication information is further used for indicating second information, where the second information includes resource information occupied by the first resource in one resource block, and the resource information includes at least one of the number of subcarriers and the subcarrier number.
Optionally, the indication information is further used for indicating third information, where the third information includes resource information and frequency offset occupied by the second resource in one resource block, and the resource information includes at least one of the number of subcarriers and the subcarrier number.
Optionally, the indication information is further used for indicating fourth information, and the fourth information includes antenna port information and a frequency offset.
It should be noted that, in the embodiment of the present invention, the division of the units is schematic, which is merely a logic function division, and other division manners may be implemented in actual practice. The functional units in the embodiment of the invention can be integrated in one processing unit, or each unit can exist alone physically, or two or more units are integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
In the case of an integrated unit, fig. 14 shows another possible structural schematic diagram of the network device involved in the above embodiment, and as shown in fig. 14, the network device 1400 may include: a processing unit 1402 and a communication unit 1403. The processing unit 1402 may be used to control and manage actions of a network device, e.g., the processing unit 1402 may be used to support the network device to perform the processes 301, 302 of fig. 3, the processes 401, 402 of fig. 4, the processes 801, 802 of fig. 8, the processes 901, 902 of fig. 9, and/or other processes for the techniques described herein. The communication unit 1403 is used to support communication between the network device and other network entities, for example, with the functional units shown in fig. 3 to 9 or with network entities such as terminal devices. The network device may also include a storage unit 1401 for storing program code and data for the network device.
The processing unit 1402 may be a processor or controller, such as a central processing unit (Central Processing Unit, CPU), a general purpose processor, a digital signal processor (Digital Signal Processor, DSP), an Application-specific integrated circuit (ASIC), a field programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. Which may implement or perform the various exemplary logic blocks, modules, and circuits described in connection with this disclosure. The processor may also be a combination that performs the function of a computation, e.g., a combination comprising one or more microprocessors, a combination of a DSP and a microprocessor, and the like. Communication unit 1403 may be a transceiver or may include separate receivers and transmitters. The storage unit 1401 may be a memory.
Referring to fig. 15, in another embodiment, the network device 1500 may include: a processor 1502, a transceiver 1503 and a memory 1501. Wherein the transceiver 1503, the processor 1502 and the memory 1501 are interconnected. Wherein the processor may perform the functions of the processing unit 1402, the transceiver may be similar to the functions of the communication unit 1403, and the memory may be similar to the functions of the storage unit 1401, which are not repeated here.
The steps of a method or algorithm described in connection with the disclosure herein may be embodied in hardware, or may be embodied in software instructions executed by a processor. The software instructions may be comprised of corresponding software modules that may be stored in random access Memory (Random Access Memory, RAM), flash Memory, read Only Memory (ROM), erasable programmable Read Only Memory (Erasable Programmable ROM), electrically Erasable Programmable Read Only Memory (EEPROM), registers, hard disk, a removable disk, a compact disc Read Only Memory (CD-ROM), or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium may be integral to the processor. The processor and the storage medium may reside in an ASIC. In addition, the ASIC may reside in a network device. The processor and the storage medium may reside as discrete components in a network device.
In implementation, the steps of the above method may be performed by integrated logic circuits of hardware in a processor or by instructions in the form of software. The steps of a method disclosed in connection with the embodiments of the present application may be embodied directly in a hardware processor for execution, or in a combination of hardware and software modules in the processor for execution. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory, and the processor reads the information in the memory and, in combination with its hardware, performs the steps of the above method. To avoid repetition, a detailed description is not provided herein.
It should also be understood that the first, second, third, fourth and various numerical numbers referred to herein are merely descriptive convenience and are not intended to limit the scope of embodiments of the present invention.
It should be understood that the term "and/or" is merely an association relationship describing the associated object, and means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.
It should be understood that, in various embodiments of the present application, the sequence numbers of the foregoing processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic of the processes, and should not constitute any limitation on the implementation process of the embodiments of the present invention.
Those of ordinary skill in the art will appreciate that the various illustrative logical blocks (illustrative logical block) and steps (steps) described in connection with the embodiments disclosed herein can be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.
In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, produces a flow or function in accordance with embodiments of the present invention, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another, for example, by wired (e.g., coaxial cable, optical fiber, digital Subscriber Line (DSL)), or wireless (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains an integration of one or more available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid State Disk (SSD)), etc.

Claims (15)

1. An information indicating method, comprising:
the network equipment generates indication information, wherein the indication information is used for indicating at least one of the position of a first subcarrier or bandwidth information, the bandwidth information indicates the number of resource blocks RB (Resource Block) corresponding to the bandwidth of a first system, and the first subcarrier is a subcarrier corresponding to a central subcarrier of the first system in a second system;
the network device sends the indication information to the terminal device, wherein the indication information is the basis for determining first resources, and the first resources are reserved for resources of the second system at the resource positions where the first system sends reference signals.
2. The method of claim 1, wherein the location of the first subcarrier comprises a number of the first subcarrier.
3. The method according to claim 1 or 2, wherein the first resource is a resource reserved in the second system for cell specific reference signals, CRSs, of the first system.
4. A method according to claim 3, wherein the first system is an LTE system and the second system is an NR system.
5. The method according to claim 1 or 2, wherein the first resource is located differently on the left and right sides of the first subcarrier.
6. The method according to claim 1 or 2, wherein the indication information is further used to indicate fourth information, the fourth information comprising antenna port information and a frequency offset.
7. A network device, comprising: a processing unit and a communication unit;
the processing unit is configured to generate indication information, where the indication information is used to indicate at least one of a position of a first subcarrier or bandwidth information, where the bandwidth information indicates a number of resource blocks RB (Resource Block) corresponding to a bandwidth of a first system, and the first subcarrier is a subcarrier corresponding to a center subcarrier of the first system in a second system;
the communication unit is configured to send the indication information to a terminal device, where the indication information is a basis for determining a first resource, and the first resource is reserved for a resource of the second system at a resource location where the first system sends a reference signal.
8. The network device of claim 7, wherein the location of the first subcarrier comprises a number of the first subcarrier.
9. The network device of claim 7 or 8, wherein the first resource is a resource reserved in the second system for cell-specific reference signals, CRSs, of the first system.
10. The network device of claim 9, wherein the first system is an LTE system and the second system is an NR system.
11. The network device according to claim 7 or 8, wherein the first resource is located differently on the left and right sides of the first subcarrier.
12. The network device according to claim 7 or 8, wherein the indication information is further used to indicate fourth information, the fourth information including antenna port information and a frequency offset.
13. A communication device, comprising: a processor, a transceiver and a memory, said memory storing a program which, when read and executed by the processor, performs the method of any of claims 1 to 6.
14. The communication device of claim 13, wherein the communication device is a system-on-chip or a network device.
15. A computer storage medium, characterized in that a computer readable program is stored, which, when read and executed, causes a communication device to perform the method of any of claims 1 to 6.
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EP18877910.2A EP3709550B1 (en) 2017-11-17 2018-11-16 Information indication method, terminal device and network device
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